<!DOCTYPE html>
<html>
<head>
<title>Insert title here</title>
<script type="text/javascript" src = "java-script-file.js"></script>
<script>

try{
	sum=f(2,5);
	document.write(sum);
}catch(err){alert(err.message);}
</script>
<script>
for(i=0;i<5;i++)
{
	var str = "Hello World!";
    var result = str.fontsize(i+5);
	document.writeln(result + i);
	document.write("<br>");
}
</script>
<script>
var x = prompt("Enter","");
var y = prompt("Enter","");
var z = prompt("Enter","");
document.write(x+y+z);
</script>
</head>
<body>
<input type="button" value = "click" id="B1">
</body>
</html>